Incorporate Champion Sports? Standard Plyo Boxes into your workout for improved jumping ability, speed and overall body strength. Constructed with 1? 15 gauge, welded tubular steel, you can feel safe about jumping onto this durable structure. When jumping from multiple boxes in a sequence the 3/4? plywood landing surface with a 1/8? non-skid rubber, slip resistant pad will keep you from sliding. Also, the legs of a standard plyo box are built at a 6-degree angle to prevent tipping.